function vyberKamery()
{
	var ref = document.getElementById('kameraImg');
	stopRefresh(ref);

	url['kameraImg'] = document.getElementById('seznamKamer').value;
	if (url['kameraImg'].indexOf("?") == -1)
		ref.src = url['kameraImg'] + "?rand=" + Math.random().toString();
	else
		ref.src = url['kameraImg'] + "&rand=" + Math.random().toString();

	
	document.getElementById(ref.id).onload = function() { startRefresh(ref, 5000, "kamInfo"); }
}